Final answer:
The correct action for an unconscious, potentially choking individual is to begin CPR with chest compressions, check the airway for obstructions. The correct answer is option D.
Step-by-step explanation:
When arriving on scene with an unconscious cyanotic male in a restaurant, indicating potential choking, the proper response would be D. Head tilt, chin lift, verify apnea and begin compressions. This is because, upon finding an individual who is unconscious and not breathing (apnea), cardiopulmonary resuscitation (CPR) is critical.
You should perform a head tilt and chin lift to open the airway, check for breathing, and if the patient is not breathing or only gasping, immediately start with chest compressions. These compressions should be performed at a depth of at least 5 cm and at a rate of 100 per minute, to the rhythm of the song 'Staying Alive'.
After 30 compressions, give two slow breaths, looking for chest rise and fall to ensure air is entering the lungs. Continue CPR until emergency medical services arrive or the patient shows signs of life.